The term 'conclude negotiations' can be summarized by two crossword solutions: DOADE (5 letters) and SEALTHEDEAL (11 letters). DOADE stands for 'Done and Dusted', which is a British expression meaning that something has been completed and is now finished. SEALTHEDEAL stands for 'Seal the Deal', which is an idiom used to describe the finalizing of an agreement or contract. Both terms refer to the conclusion of negotiations, which is the process of coming to an agreement between two or more parties.